package cn.wolfcode.shop.cloud.resolver;

import cn.wolfcode.shop.cloud.domain.User;
import cn.wolfcode.shop.cloud.redis.RedisService;
import cn.wolfcode.shop.cloud.util.CookieUtil;
import cn.wolfcode.shop.cloud.util.MemberRedsKeyPrefix;
import cn.wolfcode.shop.cloud.util.ValidationAnno;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;

import javax.servlet.http.HttpServletRequest;

public class MyArgumentResolver implements HandlerMethodArgumentResolver {
    @Autowired
    private RedisService redisService;

    @Override
    public boolean supportsParameter(MethodParameter methodParameter) {
        return methodParameter.getParameterType() == User.class && methodParameter.getParameterAnnotation(ValidationAnno.class) != null;
    }

    @Override
    public Object resolveArgument(MethodParameter methodParameter, ModelAndViewContainer modelAndViewContainer, NativeWebRequest nativeWebRequest, WebDataBinderFactory webDataBinderFactory) throws Exception {
        HttpServletRequest request = nativeWebRequest.getNativeRequest(HttpServletRequest.class);
        String token = CookieUtil.getCookie(request, "userToken");
        if (token == null) {
            return null;
        }
        return redisService.get(MemberRedsKeyPrefix.USER_TOKEN_KEYPREFIX, token, User.class);
    }
}
